Desiccation crack formation beneath the surface

DC FieldValueLanguage
dc.contributor.authorZhao, Budi-
dc.contributor.authorSantamarina, J. Carlos-
dc.date.accessioned2021-11-08T14:42:57Z-
dc.date.available2021-11-08T14:42:57Z-
dc.date.copyright2020 ICE Publishingen_US
dc.date.issued2020-02-01-
dc.identifier.citationGéotechniqueen_US
dc.identifier.issn0016-8505-
dc.identifier.urihttp://hdl.handle.net/10197/12589-
dc.description.abstractDesiccation cracks affect all mechanical and conduction properties. Previous studies have investigated the formation of surface desiccation cracks in fine-grained sediments in relation to their compressibility and suction potential. This study explores the formation of internal desiccation cracks in saturated kaolinite specimens consolidated inside self-reactive oedometer cells to reproduce the initial effective stress in buried sediments. X-ray tomography is used to monitor internal processes during consolidation and drying. Images capture the evolution of a perimetric fracture, transverse contraction, volumetric changes in entrained gas bubbles and the development of internal desiccation cracks. Entrained gas bubbles act as nucleation sites. They shrink during loading and early stages of desiccation. Eventually, the gas-water interface penetrates the soil at the bubble surface, pushes particles away, enlarges local pores and facilitates further growth of the internal desiccation crack. While air entry is grain-displacive in soft, fine-grained sediments, it becomes pore-invasive in stiff, coarse-grained sediments and internal desiccation cracks are not expected in silts or sands.en_US
dc.language.isoenen_US
dc.publisherICE Publishingen_US
dc.subjectClaysen_US
dc.subjectCompactionen_US
dc.subjectLaboratory testsen_US
dc.subjectPartial saturationen_US
dc.subjectSuctionen_US
dc.subjectShrinkageen_US
dc.titleDesiccation crack formation beneath the surfaceen_US
dc.typeJournal Articleen_US
dc.internal.authorcontactotherbudi.zhao@ucd.ieen_US
dc.statusPeer revieweden_US
dc.identifier.volume70en_US
dc.identifier.issue2en_US
dc.identifier.startpage181en_US
dc.identifier.endpage186en_US
dc.identifier.doi10.1680/jgeot.18.T.019-
dc.neeo.contributorZhao|Budi|aut|-
dc.neeo.contributorSantamarina|J. Carlos|aut|-
dc.date.embargo2021-01-01en_US
dc.description.othersponsorshipKAUST endowmenten_US
dc.date.updated2020-09-05T20:51:13Z-
dc.rights.licensehttps://creativecommons.org/licenses/by-nc-nd/3.0/ie/en_US
item.fulltextWith Fulltext-
item.grantfulltextopen-
Appears in Collections:Civil Engineering Research Collection
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